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| author | Sam Ravnborg <sam@ravnborg.org> | 2009-04-29 09:47:28 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-29 10:20:34 +0200 |
| commit | 9d16e78318f174fd4b07916a93e41749d5199267 (patch) | |
| tree | ca6c0cdbd651aeef4df3b0d6c2b9c05c0e8cbebd /arch | |
| parent | bf6a57418d5445c98047edbec022c9e54d1526e6 (diff) | |
| download | linux-9d16e78318f174fd4b07916a93e41749d5199267.tar.gz linux-9d16e78318f174fd4b07916a93e41749d5199267.tar.bz2 linux-9d16e78318f174fd4b07916a93e41749d5199267.zip | |
x86, vmlinux.lds: unify percpu
32 bit:
- move __init_end outside the .bss output section
It really did not belong in there
[ Impact: 64-bit: cleanup, 32-bit: refactor linker script ]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@MIT.EDU>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1240991249-27117-12-git-send-email-sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 30 | ||||
| -rw-r--r-- | arch/x86/kernel/vmlinux_32.lds.S | 6 | ||||
| -rw-r--r-- | arch/x86/kernel/vmlinux_64.lds.S | 26 |
3 files changed, 30 insertions, 32 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 1ab62a5fa1a5..1ea2b8571e1a 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -330,6 +330,36 @@ SECTIONS } #endif +#if defined(CONFIG_X86_64) && defined(CONFIG_SMP) + /* + * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the + * output PHDR, so the next output section - __data_nosave - should + * start another section data.init2. Also, pda should be at the head of + * percpu area. Preallocate it and define the percpu offset symbol + * so that it can be accessed as a percpu variable. + */ + . = ALIGN(PAGE_SIZE); + PERCPU_VADDR(0, :percpu) +#else + PERCPU(PAGE_SIZE) +#endif + + . = ALIGN(PAGE_SIZE); + /* freed after init ends here */ + __init_end = .; + +#ifdef CONFIG_X86_64 + .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { + . = ALIGN(PAGE_SIZE); + __nosave_begin = .; + *(.data.nosave) + . = ALIGN(PAGE_SIZE); + __nosave_end = .; + } :data.init2 + /* use another section data.init2, see PERCPU_VADDR() above */ +#endif + + #ifdef CONFIG_X86_32 # include "vmlinux_32.lds.S" #else diff --git a/arch/x86/kernel/vmlinux_32.lds.S b/arch/x86/kernel/vmlinux_32.lds.S index 36c8fbd3c762..d23ee2c15c28 100644 --- a/arch/x86/kernel/vmlinux_32.lds.S +++ b/arch/x86/kernel/vmlinux_32.lds.S @@ -1,11 +1,5 @@ - PERCPU(PAGE_SIZE) - - . = ALIGN(PAGE_SIZE); - /* freed after init ends here */ - /* BSS */ .bss : AT(ADDR(.bss) - LOAD_OFFSET) { - __init_end = .; __bss_start = .; *(.bss.page_aligned) *(.bss) diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S index 1aa536223330..a53936696a08 100644 --- a/arch/x86/kernel/vmlinux_64.lds.S +++ b/arch/x86/kernel/vmlinux_64.lds.S @@ -1,29 +1,3 @@ -#ifdef CONFIG_SMP - /* - * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the - * output PHDR, so the next output section - __data_nosave - should - * start another section data.init2. Also, pda should be at the head of - * percpu area. Preallocate it and define the percpu offset symbol - * so that it can be accessed as a percpu variable. - */ - . = ALIGN(PAGE_SIZE); - PERCPU_VADDR(0, :percpu) -#else - PERCPU(PAGE_SIZE) -#endif - - . = ALIGN(PAGE_SIZE); - __init_end = .; - - .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { - . = ALIGN(PAGE_SIZE); - __nosave_begin = .; - *(.data.nosave) - . = ALIGN(PAGE_SIZE); - __nosave_end = .; - } :data.init2 - /* use another section data.init2, see PERCPU_VADDR() above */ - .bss : AT(ADDR(.bss) - LOAD_OFFSET) { . = ALIGN(PAGE_SIZE); __bss_start = .; /* BSS */ |